(Advanced) PHP file read and write operations related functions summary

The following text: This article mainly introduces the PHP file read and write operation related function Summary, this paper summarizes fwrite (), Fread (), fgets (), fgetc (), file (), ReadFile () and other functions of the introduction and use

Zabbix Monitoring Linux Host Setup method

Description The ZABBIX monitoring server has been configured to monitor Linux hosts using Zabbix. Specific operation: The following operations are performed on the monitored Linux hosts, with the CentOS 6.x system as an example. First, configure

Explain how PHP handles passwords in several ways

In our daily development, our passwords are often encrypted, for many PHP developers in the first contact with PHP, the first cryptographic function to handle the password may be MD5, I was like this: $password = MD5 ($_post["password"]); MD5

Php+ the alphanumeric and Chinese characters in the string are divided

such as: $str = "How does PHP divide 322 of the alphanumeric SF f45d and Chinese in the string?" "; Divide by numbers or letters. $str = "How does PHP divide 322 alphanumeric asf f45d and Chinese _ in a string?" "; $arr = Preg_split ("/([a-za-z0-9]

Android UI Control Series: Tab layout (tab layouts)

In order to create a tabbed UI, you need to use a tabhost and a tabwidget,tabhost must be the root node of the layout file, which contains the Tabwidget to display the tabs and a framelayout for displaying the contents of the options You can

The definition and usage of PHP metaphone () functions

PHP Metaphone () function calculates the Metaphone key of the string, this article introduces the basic usage and example of PHP Metaphone () function to the code farmers, the code farmer can refer to the methods and examples of this article.

Get an in-depth look at array arrays and foreach in PHP

1. Understanding Arrays The array in PHP is actually an ordered map. A map is a type that associates values to the keys. A detailed explanation can be found in: array arrays in php.net. 2. Example: General array Here, I pass a simple example and

Yii2 ways to hide Frontend/web and Backend/web

Yii is a high-performance, component-based PHP framework for rapid development of modern WEB applications. The name Yii (read as ' Easy ') has the dual meaning of "extreme simplicity and constant evolution" in Chinese, also can be regarded as **yes

PHP Vulnerability Full solution (vi)-cross-site request forgery

CSRF (Cross site request forgeries), which is intended to be spoofed across Web sites, is also written as XSRF. The attacker forges the HTTP request of the target user and then sends the request to a Web site with a CSRF vulnerability, which causes

PHP string length calculation-strlen () Function Usage Introduction

Strlen () function and Mb_strlen () function In PHP, the function strlen () returns the length of the string. The function prototypes are as follows: int strlen (string string_input); The parameter string_input is the string to be processed.The

PHP Learning Treasure-Chapter II

The scripting language of the server-side web This chapter highlights• Learn about static Dynamic Web pages• Client-side vs. servo-Scripting languages• Servo-End scripting language introduction This chapter focuses on the server-side scripting

PHP Simulation ping command (how to use PHP exec function)

Using PHP to simulate our usual DOS command ping command, the main use of PHP's built-in function exec to call the system's ping command, to achieve the ping command function. "; flush (); while (1) {echo "", exec ("Ping-c $count-S $psize $to _ping"

PHP recursive, static variable, anonymous function use

current To-Do List '; foreach ($parent as $task _id + $todo) {echo " $todo"; if (Isset ($tasks [$task _id])) {//If the current ID has subtasks, the menu make_list is created recursively ($tasks [$task _id]); } echo "";

46 very useful snippets of PHP code (III)

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31. Delete Folder Contents [Code]php Code: function Delete ($path) { if (is_dir ($path) = = = True) { $files = Array_diff (Scandir ($path), Array ('. ', '. ')); foreach ($files as $file) { Delete (Realpath

Using PHP scripts to encrypt strings using the MD5 function under Linux

#touch a.php //create a.php file #vi a.php //edit a.php file with VI input and save #php a.php //Run a.php file Display: e10adc3949ba59abbe56e057f20f883e A. On Linux or UNIX, md5sum is the tool that is used to calculate and verify the file

A solution to the problem of garbled Chinese in PHP domdocument saving XML

PHP DOMDocument FOR XML operations as long as we are English is no problem, but if the Chinese font will have garbled problems, the following we give you some solutions to this problem. PHP inside the DOM is UTF8 mechanism, in loadhtml, is to check

PHP Learning operators and operator precedence

Arithmetic operators Operator name Result $a + $b addition $a and $b and $a-the difference between $b subtraction $a and $b $a * $b multiplication $a and the product of $b $a/$b division $a divided by the quotient of the $b $a% $b modulo $a divided

PHP two fork Tree (three): Red black Tree

On the principle of the red and black trees on the internet is quite a lot of resources, and the situation is a little complicated, so here I will no longer state, directly on the code bar: key = $key; $this->parent = NULL;

PHP Introductory tutorial operator and control structure flow

This article describes the PHP introductory tutorial operator and control structure flow. Share to everyone for your reference, as follows: demo1.php "; echo "His name is". $username 2. ", read who asked June chanting, \ \ \ \ \ \ \ \ \ \ \" ";

Uploading files PHP uploading files on server side with Curl_init ()

Uploading files on the client is a common scenario that web development encounters. Don't repeat it here. Here we are going to elaborate on how to upload files to other servers on the service side. This scenario is often encountered in a resource

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